Pylance does not report expected error "Argument missing"

[pasunx]

Environment data

• Language Server version: 2021.3.3
• OS and version: win32 x64
• Python version (and distribution if applicable, e.g. Anaconda):
• python.analysis.indexing: undefined
• python.analysis.typeCheckingMode: strict

Code Snippet / Additional information

class A:

    def __init__(self, x: str, *, y: str) -> None: ...

class B:

    def __init__(self, a: A) -> None: ...

def C(b: B) -> None: ...

B(A(y = "Y")) # error: Argument missing for parameter "x" Pylance (reportGeneralTypeIssues)

C(B(A(y = "Y"))) # no error

[erictraut]

This will be fixed in the next release of pylance. Thanks for the bug report.

[jakebailey]

This issue has been fixed in version 2021.3.4, which we've just released. You can find the changelog here: https://github.com/microsoft/pylance-release/blob/main/CHANGELOG.md#202134-31-march-2021